The file can be easily located via the following path: C:\Program Folder\IBM\Notes\Data
Busytime.nsf is also characterized as "Free Time Database" as it holds the scheduling info of all the connected Notes users. It delivers the details about free time of the users which benefits in arranging a meetings. It becomes easy to schedule the meetings with others if the free time information of users in available.
The Scheduling and Calendar attributes of Lotus Notes aid the users to organize meetings with each other by gathering their free time info. For the execution purpose, both aspects utilize the Calendar Connector (Calconn Task), the Schedule Manager (Sched task),and Free Time System (which is the combination of Calconn, Sched, & notes Tasks). When the user deploys the IBM Notes server on the local machine, the Calconn and Sched Task get spontaneously added to the Notes.ini file which is placed on the Server. On using the server first time.